US4227529A - Tracheal suction catheter - Google Patents

Tracheal suction catheter Download PDF

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Publication number
US4227529A
US4227529A US06/004,354 US435479A US4227529A US 4227529 A US4227529 A US 4227529A US 435479 A US435479 A US 435479A US 4227529 A US4227529 A US 4227529A
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US
United States
Prior art keywords
tube
aperture
suction
mucosa
knee
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US06/004,354
Inventor
Vagn N. F. Lomholt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LOMHOLT VAGAN NIELS
Original Assignee
Molnlycke Steritex AS
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Publication date
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Assigned to LOMHOLT, VAGAN NIELS reassignment LOMHOLT, VAGAN NIELS ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: MOLNLYCKE SLERITEX A/S.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/84—Drainage tubes; Aspiration tips

Definitions

  • the invention relates to a tracheal suction catheter of the type comprising a flexible, externally smooth tube whose outermost free end is open, the outermost portion of said tube being formed with a side bend, an aperture being provided immediately adjacent the knee formed by said side bend. It has been found that apertures in the wall of the tube often give rise to considerable damage to the mucosa during insertion and suction because the tube is clamped thereto upon application of suction and only exerts the sucking function on a very limited area, having an ineffective suction of mucosa in its wake.
  • the object of the invention is to provide a tracheal suction catheter which is particularly effective and prevents damage to the mucosa.
  • a tracheal suction catheter of said type such that immediately around said aperture the tube wall is sunk with respect to the cylindrical surface of the tube. This means that the catheter will not have such a local suction as the known catheters because the aperture is spaced from the mucosa, resulting in a spreading of suction over a larger area. This also ensures that the mucosa are not damaged, neither during insertion nor during suction.
  • a particularly effective suction may be obtained by providing said catheter with a plurality of small apertures in the tube wall immediately adjacent the free, open end of the tube, the size of the aperture at the knee and the size and/or number of said small apertures at the tube end being mutually adapted so as to obtain a substantially equally vigorous suction at the tube end and at the knee.
  • the small apertures at the tube end also cause the suction zone to be expediently spread at the open tube end so that the mucosa will not be damaged there either.
  • FIG. 1 shows the lower end of a preferred embodiment of a tracheal suction catheter in longitudinal section
  • FIG. 2 is a side view of the same catheter.
  • FIG. 1 shows the lower end of a tracheal suction catheter comprising an externally smooth tube 1 whose lower portion has a side bend 2, resulting in the formation of a knee 3.
  • an aperture 4 At the knee 3 there is formed an aperture 4 and the portion of the tube wall defining said aperture has a sunk area 5.
  • the sunk area is formed so as to extend a considerable distance longitudinally of the tube at both sides of the aperture 4, while the sunk area 5 immediately opposite the aperture 4 tapers inwardly as at 6.
  • Said taper may extend adjacent the aperture, but leaves preferably some sunk area all round said aperture.
  • the tube 1 is open at the free end as indicated at 7, and adjacent thereto the tube wall is provided with a plurality of small apertures 8 whose size and number are adapted with respect to the aperture 4 so as to obtain essentially the same suction effect at the tube end as at the knee 3.

Abstract

The invention relates to a tracheal suction catheter comprising a flexible tube whose outermost portion has a side bend forming a knee on the tube, an aperture being provided in the tube wall adjacent the knee.
The object of the invention is to provide a construction reducing as much as possible the risk of the catheter being clamped to the mucosa, and according to the invention this is achieved by the tube wall immediately around said aperture being sunk with respect to the cylindrical surface of the tube. Suction from the mucosa is thus spread over a greater area, and the aperture itself is spaced from the mucosa ensuring that the mucosa is not damaged, neither during insertion nor during suction.

Description

The invention relates to a tracheal suction catheter of the type comprising a flexible, externally smooth tube whose outermost free end is open, the outermost portion of said tube being formed with a side bend, an aperture being provided immediately adjacent the knee formed by said side bend. It has been found that apertures in the wall of the tube often give rise to considerable damage to the mucosa during insertion and suction because the tube is clamped thereto upon application of suction and only exerts the sucking function on a very limited area, having an ineffective suction of mucosa in its wake. The object of the invention is to provide a tracheal suction catheter which is particularly effective and prevents damage to the mucosa.
This is achieved according to the invention by forming a tracheal suction catheter of said type such that immediately around said aperture the tube wall is sunk with respect to the cylindrical surface of the tube. This means that the catheter will not have such a local suction as the known catheters because the aperture is spaced from the mucosa, resulting in a spreading of suction over a larger area. This also ensures that the mucosa are not damaged, neither during insertion nor during suction.
It is common knowledge in the art to provide a tracheal suction catheter with several apertures as it may happen that an aperture is clogged by mucus. In a catheter of the subject type it has been found that a particularly effective suction may be obtained by providing said catheter with a plurality of small apertures in the tube wall immediately adjacent the free, open end of the tube, the size of the aperture at the knee and the size and/or number of said small apertures at the tube end being mutually adapted so as to obtain a substantially equally vigorous suction at the tube end and at the knee. The small apertures at the tube end also cause the suction zone to be expediently spread at the open tube end so that the mucosa will not be damaged there either.
The invention will be described in more detail below with reference to the drawing, in which
FIG. 1 shows the lower end of a preferred embodiment of a tracheal suction catheter in longitudinal section, and
FIG. 2 is a side view of the same catheter.
FIG. 1 shows the lower end of a tracheal suction catheter comprising an externally smooth tube 1 whose lower portion has a side bend 2, resulting in the formation of a knee 3. At the knee 3 there is formed an aperture 4 and the portion of the tube wall defining said aperture has a sunk area 5. As will be seen in FIG. 2 the sunk area is formed so as to extend a considerable distance longitudinally of the tube at both sides of the aperture 4, while the sunk area 5 immediately opposite the aperture 4 tapers inwardly as at 6. Said taper may extend adjacent the aperture, but leaves preferably some sunk area all round said aperture.
The tube 1 is open at the free end as indicated at 7, and adjacent thereto the tube wall is provided with a plurality of small apertures 8 whose size and number are adapted with respect to the aperture 4 so as to obtain essentially the same suction effect at the tube end as at the knee 3.

Claims (1)

I claim:
1. In a tracheal suction catheter of the type comprising a flexible, externally smooth tube whose outermost free end is open and is provided with a plurality of small apertures in the tube wall immediately adjacent the free, open end of the tube, the outermost portion of said tube being further formed with a side bend, there being a further aperture in said tube wall immediately adjacent the knee formed by said side bend, the provision of a depression in the outer surface of the wall portion surrounding said further aperture, the size of the further aperture and the size and number of said small apertures being related such as to obtain a substantially equal degree of suction force at the tube end and at the knee.
US06/004,354 1978-01-23 1979-01-18 Tracheal suction catheter Expired - Lifetime US4227529A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK32578A DK32578A (en) 1978-01-23 1978-01-23 TRACHEAL SUCTION CATHETER
DK325/78 1978-01-23

Publications (1)

Publication Number Publication Date
US4227529A true US4227529A (en) 1980-10-14

Family

ID=8092273

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/004,354 Expired - Lifetime US4227529A (en) 1978-01-23 1979-01-18 Tracheal suction catheter

Country Status (10)

Country Link
US (1) US4227529A (en)
JP (1) JPS54112588A (en)
CH (1) CH637022A5 (en)
DE (1) DE2901831A1 (en)
DK (1) DK32578A (en)
FR (1) FR2414924A1 (en)
GB (1) GB2012593B (en)
IT (1) IT1193117B (en)
NL (1) NL7900525A (en)
SE (1) SE433444B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4813926A (en) * 1986-07-02 1989-03-21 Sherwood Medical Company Medical suction device with air vent and fixed restrictor
WO1993020776A1 (en) * 1992-04-13 1993-10-28 Segerdal Michael J Disposable saliva ejector
US5441410A (en) * 1992-04-13 1995-08-15 Segerdal; Michael J. Disposable saliva ejector
US20040006318A1 (en) * 2002-07-02 2004-01-08 Ramanathan Periakaruppan Side hole in catheter
US20070293812A1 (en) * 2006-06-14 2007-12-20 Wright Clifford A Respiratory suction catheter assembly
US20090204065A1 (en) * 2007-03-29 2009-08-13 Wright Clifford A Suction wand

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6029141A (en) * 1983-07-25 1985-02-14 オリンパス光学工業株式会社 Medical high frequency incision tool
JPS62122609U (en) * 1986-12-04 1987-08-04
US5067497A (en) * 1990-03-16 1991-11-26 Progressive Medical Design, Inc. Intubation device with adjustable suction means above the cuff

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3175557A (en) * 1963-05-17 1965-03-30 Daniel O Hammond Tracheal cannula
DE1248230B (en) * 1962-12-26 1967-08-24 Raymond Pesty Tracheostomy tubes
US3945385A (en) * 1974-10-25 1976-03-23 Physicians' Medical Patent Development Corporation Suction catheter
US3965901A (en) * 1974-10-03 1976-06-29 American Hospital Supply Corporation Suction catheter
US4037605A (en) * 1975-06-19 1977-07-26 Bernard Charles Firth Tracheotomy tube

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1248230B (en) * 1962-12-26 1967-08-24 Raymond Pesty Tracheostomy tubes
US3175557A (en) * 1963-05-17 1965-03-30 Daniel O Hammond Tracheal cannula
US3965901A (en) * 1974-10-03 1976-06-29 American Hospital Supply Corporation Suction catheter
US3945385A (en) * 1974-10-25 1976-03-23 Physicians' Medical Patent Development Corporation Suction catheter
US4037605A (en) * 1975-06-19 1977-07-26 Bernard Charles Firth Tracheotomy tube

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4813926A (en) * 1986-07-02 1989-03-21 Sherwood Medical Company Medical suction device with air vent and fixed restrictor
WO1993020776A1 (en) * 1992-04-13 1993-10-28 Segerdal Michael J Disposable saliva ejector
US5441410A (en) * 1992-04-13 1995-08-15 Segerdal; Michael J. Disposable saliva ejector
US20040006318A1 (en) * 2002-07-02 2004-01-08 Ramanathan Periakaruppan Side hole in catheter
US20070293812A1 (en) * 2006-06-14 2007-12-20 Wright Clifford A Respiratory suction catheter assembly
US7527058B2 (en) 2006-06-14 2009-05-05 Medical Device Group, Inc. Respiratory suction catheter assembly
US20090204065A1 (en) * 2007-03-29 2009-08-13 Wright Clifford A Suction wand
US8012141B2 (en) 2007-03-29 2011-09-06 Wright Clifford A Suction wand

Also Published As

Publication number Publication date
GB2012593A (en) 1979-08-01
GB2012593B (en) 1982-06-30
CH637022A5 (en) 1983-07-15
DK32578A (en) 1979-07-24
DE2901831A1 (en) 1979-07-26
FR2414924B1 (en) 1983-11-18
SE433444B (en) 1984-05-28
IT1193117B (en) 1988-06-02
FR2414924A1 (en) 1979-08-17
IT7912427A0 (en) 1979-01-19
JPS54112588A (en) 1979-09-03
NL7900525A (en) 1979-07-25
SE7900584L (en) 1979-07-24

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Legal Events

Date Code Title Description
AS Assignment

Owner name: LOMHOLT, VAGAN NIELS FINSEN SKOVVEJ 21, DK2820 GEN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:MOLNLYCKE SLERITEX A/S.;REEL/FRAME:004228/0532

Effective date: 19840207